1950s Hamilton Automatic Micro-Rotor Wristwatch with Tuxedo Dial and Original BoxThis Watch A beautiful dress watch by Hamilton Watch Co. with an early micro rotor automatic caliber unlike the conventional central, full rotor, which was the more common caliber making this quite a rare item! This caliber was a collaboration between Buren & Hamilton and was much like the collaboration between them and Heuer. This movement is marked Caliber 666 which is the equivalent to bBuren 1000A. Amazingly, this watch also comes with its